package com.tutor.lzm.utils;

import android.util.SparseArray;
import android.view.View;

/**
 * Created by zzgpc on 2017-9-23.
 */

public class AppViewHolder {

    // I added a generic return type to reduce the casting noise in client code
    @SuppressWarnings("unchecked")
    public static <T extends View> T get(View view, int id) {
        SparseArray<View> viewHolder = (SparseArray<View>) view.getTag();
        if (viewHolder == null) {
            viewHolder = new SparseArray<View>();
            view.setTag(viewHolder);
        }
        View childView = viewHolder.get(id);
        if (childView == null) {
            childView = view.findViewById(id);
            viewHolder.put(id, childView);
        }
        return (T) childView;
    }


    /**
     *
     * adapter
     * getView
     * 示例代码
     *
     *
     * @Override
    public View getView(int position, View convertView, ViewGroup parent) {

    if (convertView == null) {
    convertView = LayoutInflater.from(context)
    .inflate(R.layout.banana_phone, parent, false);
    }

    ImageView bananaView = AppViewHolder.get(convertView, R.id.banana);
    TextView phoneView = AppViewHolder.get(convertView, R.id.phone);

    BananaPhone bananaPhone = getItem(position);
    phoneView.setText(bananaPhone.getPhone());
    bananaView.setImageResource(bananaPhone.getBanana());

    return convertView;
    }


     */
}
